chore: Update build scripts to generate policy files and role definit…

…ions

docs/wiki/Whats-new.md

@@ -47,6 +47,14 @@ This article will be updated as and when changes are made to the above and anyth
 
 Here's what's changed in Enterprise Scale/Azure Landing Zones:
 
+### August 2024
+
+> NOTE TO CONTRIBUTORS: Due to security compliance requirements, we've made core changes that mean we no longer automatically build the policies, initiatives and roles templates after changes in the `src` folder are committed. This means that you as a contributor must run the bicep build commands to generate the required outputs as part of your pull request. Depending on the files you've updated these are the commands (assuming you have bicep installed):
+> 
+> - `bicep build ./src/templates/policies.bicep --outfile ./eslzArm/managementGroupTemplates/policyDefinitions/policies.json`
+> - `bicep build ./src/templates/initiatives.bicep --outfile ./eslzArm/managementGroupTemplates/policyDefinitions/initiatives.json`
+> - `bicep build ./src/templates/roles.bicep --outfile ./eslzArm/managementGroupTemplates/roleDefinitions/customRoleDefinitions.json`
+
 ### July 2024
 
 #### Policy